1. By Ciara, Laura, Rhona, Mhairi, Evie and Lois
Earthquakes By
Ciara, Laura, Rhona, Mhairi, Evie and Lois

2. What is an Earthquake? Earth is made up of large pieces of flat rock
These are called Tectonic plates
Two plates rub together
This forces waves of energy to the surface
Causing the earth to shake
This is called an earthquake

3. Primary effects Instant damages caused by the ground shaking Examples
Buildings collapsing
Roads and bridges collapsing

4. Secondary Effects
Secondary effects happen as a result of the primary effects
Examples:
landslides and avalanches
tsunamis
fires caused by broken gas pipes and electric cables
diseases spreading easily as there is no fresh water
famine as there is little food available
Burst sewage pipes
giant waves created by an earthquake on the sea floor which can damage coastal towns

5. Measuring an Earthquake
Seismometer measures an earthquake
Measures the vibrations of the ground and how long it lasts
Records the results on a graph called seismograph

6. Example: Haiti January 12, 2010 Primary effects Hospitals collapsed
222,500 people dies
300,000 injured
4,000 schools destroyed
Secondary effects
Cholera outbreaks (disease)
Crops and farms destroyed

7. Procedure of an earthquake
Be calm
Indoors:
Get under a sturdy table, bed or desk
Stay away from windows
Stay away from outside walls
Outdoors
Find an open area
Stay away from buildings, power lines or anything that can fall
Stay in your car

8. Quiz
The instrument used to measure and record the vibrations of earthquakes is called what?
A- phonograph
B- seisgraph
C- electrograph
D- photograph
Answer- B

9. What is the name for the sudden movement of land often caused by earthquakes?
A- A landfill
B- A landfall
C- A landslide
D- A landmark C

10. A large sea wave produced by earthquakes occurring under the sea is known as what?
A- A tsunami
B- A hurricane
C- A cyclone
D- A tornado A

11. References
ds/earthquakes_rev2.shtml
primary/english/vocabulary-27-words-related-to-earthquakes/
csd.lbl.gov/downloads/Earthquake%20Safety%20Procedures.pdf